docs: Remove publicInternet from Getting Started
docs: Remove publicInternet from Getting Started

This section didn't really fit in, as it was not actionable, but merely
explaining why the application is already accessible. Some UX study
participants got confused by this and thought they had to edit the blueprint.

NetSys/quilt,kklin/kelda,quilt/quilt,kelda/kelda,quilt/quilt,LuiseV/quilt,quilt/quilt,kklin/kelda,kelda/kelda,LuiseV/quilt,ejj/quilt-dev,kklin/quilt,quilt/quilt,kklin/kelda,NetSys/quilt,kelda/kelda,ejj/quilt-dev,kelda/kelda,LuiseV/quilt,ejj/quilt-dev,LuiseV/quilt,NetSys/quilt,kklin/quilt,kklin/quilt,NetSys/quilt,NetSys/quilt,LuiseV/quilt,kklin/quilt,ejj/quilt-dev,kklin/kelda